Question 17N.2.SL.TZ0.07b
| Date | November 2017 | Marks available | [Maximum mark: 8] | Reference code | 17N.2.SL.TZ0.07b |
| Level | SL | Paper | 2 | Time zone | TZ0 |
| Command term | Explain | Question number | b | Adapted from | N/A |
Plants have widespread influences, from food chains to climate change.
Explain the process of photosynthesis.
[8]
a. autotrophs perform photosynthesis
b. carbon dioxide and water are the reactants/raw materials required for «photosynthesis»
c. light splits water molecules/causes photolysis
d. «photolysis» releases oxygen as a «waste» product
e. light energy is converted into chemical energy
f. «photosynthesis» produces organic compounds/glucose/carbohydrates
g. photosynthesis occurs in chloroplasts
h. chlorophyll «photosynthetic pigment» absorbs light
i. different pigments absorb different wavelengths «of light»
j. chlorophyll absorbs red and blue light/ends of the spectrum
k. carbon dioxide concentration/temperature/light intensity are limiting factors
Award only [1] for correct display of equation unless further annotated or explained
Allow up to [2] for correct use of understandings specified as AHL topic 8
[Max 8 Marks]
